# Ddd Data Layer Advanced

> Structure a Ledger Wallet data layer where one API response serves several entities. Use when creating or reviewing cross-entity domain/api orchestration with RTK Query, createAsyncThunk, or both, including response validation and tests spanning multiple domain/entity packages.

- Skill: `ledgerhq/ddd-data-layer-advanced-2` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ledgerhq/ddd-data-layer-advanced-2`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ledgerhq/ddd-data-layer-advanced-2/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: ledgerhq (https://skillmd.com/u/ledgerhq)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/ledgerhq/ddd-data-layer-advanced-2

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Read and follow the [canonical skill](../../../.agents/skills/ddd-data-layer-advanced/SKILL.md) completely before acting. Treat it as the single source of truth.